Mark usage as noreturn, as suggested by -Wmissing-noreturn

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/xeyes.c b/xeyes.c
index c58436d..c2f3a73 100644
--- a/xeyes.c
+++ b/xeyes.c
@@ -43,7 +43,7 @@ from the X Consortium.
 
 /* Exit with message describing command line format */
 
-static void
+static void _X_NORETURN
 usage(void)
 {
     fprintf(stderr,